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Dan-Dare
Anyone no of any further development.

http://www.spikedhumor.com/articles/147633...ure-Cancer.html

How much energy is required to generate such powerful radio waves.


Dan Dare
Tom2943
My uncle and I were discussing this a few weeks back, actually. I'm not sure of any of the exact figures, but he gave me this book:
http://www.amazon.com/Scientist-Madman-Thi...b/dp/0743449762
As of yet I've only briefly flicked through the first 20 or so pages, but I'm sure you can find a lot of information about the subject in there.
questionmark
QUOTE (Dan-Dare @ Mar 29 2008, 03:32 PM) *
Anyone no of any further development.

http://www.spikedhumor.com/articles/147633...ure-Cancer.html

How much energy is required to generate such powerful radio waves.


Dan Dare


Depends how much you can concentrate them. Anywhere from a few watts to several kilowatts. We already have a similar application..not to destroy the cells but to heat them: Its called the microwave.


Torgo
Oh GOD not this drivel again...

Okay, the cancer treatment idea is plausible and might be workable as a treatment. No idea why all the news reports focus on this guy though, and you of course need a LOT of work before you could make any sort of clinical device and prove that it works at least as well as the other options out there.

The hydrogen idea is flabbergastinly stupid. As I've said in thread after thread after thread, GENERATING HYDROGEN FROM WATER IS ***NOT*** AN ENERGY SOURCE. Its a way of storing energy. In this case the radio frequency radiation is being used to split the water. ALL THE ENERGY CONTAINED IN THE HYDROGEN had to be pumped into the water from the radio waves and a good fraction of those waves will pass through unhindered, and you HAVE TO GENERATE THE ENERGY SOMEWHERE. I still can't believe people fall for this. Sorry about my tone, but I am REALLY annoyed by these reporters who don't know their basic science and cant tell fact from fraud.
questionmark
QUOTE (Torgo @ Mar 30 2008, 02:03 AM) *
Oh GOD not this drivel again...

Okay, the cancer treatment idea is plausible and might be workable as a treatment. No idea why all the news reports focus on this guy though, and you of course need a LOT of work before you could make any sort of clinical device and prove that it works at least as well as the other options out there.

The hydrogen idea is flabbergastinly stupid. As I've said in thread after thread after thread, GENERATING HYDROGEN FROM WATER IS ***NOT*** AN ENERGY SOURCE. Its a way of storing energy. In this case the radio frequency radiation is being used to split the water. ALL THE ENERGY CONTAINED IN THE HYDROGEN had to be pumped into the water from the radio waves and a good fraction of those waves will pass through unhindered, and you HAVE TO GENERATE THE ENERGY SOMEWHERE. I still can't believe people fall for this. Sorry about my tone, but I am REALLY annoyed by these reporters who don't know their basic science and cant tell fact from fraud.


Take three deep breaths... though you are perfectly right, this thing pops up about every other Thursday....
Dan-Dare
QUOTE (Torgo @ Mar 30 2008, 12:03 AM) *
Oh GOD not this drivel again...
The hydrogen idea is flabbergastinly stupid.


Researchers at Purdue University have further developed a technology that could represent a pollution-free energy source for a range of potential applications, from golf carts to submarines and cars to emergency portable generators.

Purdue researchers demonstrate their method for producing hydrogen by adding water to an alloy of aluminum and gallium. The hydrogen could then be used to run an internal combustion engine or a fuel cell. The reaction was discovered by Jerry Woodall, center, a distinguished professor of electrical and computer engineering. Charles Allen, holding test tube, and Jeffrey Ziebarth, both doctoral students in the School of Electrical and Computer Engineering, are working with Woodall to perfect the process.

The technology produces hydrogen by adding water to an alloy of aluminum and gallium. When water is added to the alloy, the aluminum splits water by attracting oxygen, liberating hydrogen in the process. The Purdue researchers are developing a method to create particles of the alloy that could be placed in a tank to react with water and produce hydrogen on demand.

(Not so stupid and not that much drivel)

Dan Dare

ships-cat
There's the article about this here .

It's worth noting that this is not 'free energy'... you put aluminium, gallium and water INTO the system, and get heat, hydrogen, gallium, and aluminium oxide OUT of it.

Aluminium is expensive; however, you can use the waste alluminium oxide and refine it back into aluminium again using grid electricty. (or, as the report authors suggest, at the power plant itself, which reduces the waste involved in transporting electricity over the grid). Similarly, the gallium is not consumed, but acts as a sort of catalyst, though there would be a cost in extracting it and re-forming it back into pellets.

Pound-for-pound, the aluminium/water reaction produces less energy than gasoline. However, unlike gasoline the waste products can be converted back into fuel again.

So there is potential in this method.

Meow Purr.
questionmark
QUOTE (ships-cat @ Mar 30 2008, 04:36 PM) *
There's the article about this here .

It's worth noting that this is not 'free energy'... you put aluminium, gallium and water INTO the system, and get heat, hydrogen, gallium, and aluminium oxide OUT of it.

Aluminium is expensive; however, you can use the waste alluminium oxide and refine it back into aluminium again using grid electricty. (or, as the report authors suggest, at the power plant itself, which reduces the waste involved in transporting electricity over the grid). Similarly, the gallium is not consumed, but acts as a sort of catalyst, though there would be a cost in extracting it and re-forming it back into pellets.

Pound-for-pound, the aluminium/water reaction produces less energy than gasoline. However, unlike gasoline the waste products can be converted back into fuel again.

So there is potential in this method.

Meow Purr.


The point is more how does it compare to other energy storing methods, say hydrogen in magnesium?

It is not that we are lacking methods to store energy...the problem is that the losses are staggering. So far the most efficient is pumping water back up a hill and have it generate energy when it rushes down ... and that is only slightly higher than 70%. And it is slightly too big to be build into, lets say, an automobile.



Torgo
QUOTE (Dan-Dare @ Mar 30 2008, 10:25 AM) *
Researchers at Purdue University have further developed a technology that could represent a pollution-free energy source for a range of potential applications, from golf carts to submarines and cars to emergency portable generators.

Purdue researchers demonstrate their method for producing hydrogen by adding water to an alloy of aluminum and gallium. The hydrogen could then be used to run an internal combustion engine or a fuel cell. The reaction was discovered by Jerry Woodall, center, a distinguished professor of electrical and computer engineering. Charles Allen, holding test tube, and Jeffrey Ziebarth, both doctoral students in the School of Electrical and Computer Engineering, are working with Woodall to perfect the process.

The technology produces hydrogen by adding water to an alloy of aluminum and gallium. When water is added to the alloy, the aluminum splits water by attracting oxygen, liberating hydrogen in the process. The Purdue researchers are developing a method to create particles of the alloy that could be placed in a tank to react with water and produce hydrogen on demand.


This sounds entirely plausible - a friend in my dorm who is an electrical engineer showed me a material he got a little bit of at an internship, a strange alloy of two metals, that when he tapped it to a 9 volt battery catastrophically rearranged its atoms and heated up to thousands of degrees releasing a lot of energy that was stored in its structure. And while this certainly could be a easy way to carry a material that will generate a lot of hydrogen per unit mass, that's not the point. The point I was trying to make is that these various hydrogen-generation methods (including this one) are not energy sources. they are dense ways of storing energy.

When the alloy is mixed with water the potential energy in the bonds present in the metal are transferred into the hydrogen-hydrogen covalent bonds. And when you MAKE the alloy, the potential energy in its bonds has to come from somewhere. Ultimately you have to take something you find in nature and drop it to a lower energy/higher entropy state in order to get energy in the first place, regardless if its burning fossil fuels or fissioning uranium or light turned into heat in a solar panel or heat transferred to a cold area in a heat engine. If they were marketing this as an emergency fuel or a dense way to "store" hydrogen (Just add water! wink2.gif ) I would have no issue. When they call it an energy source, or like in the video say it could "Solve the energy crisis" I get very irritated.

Its worth noting that the claim that it could be a "pollution free" energy source is false, unless you ONLY make the stuff using power generated from clean energy sources. You're just moving the energy generation elsewhere, and introducing inefficiencies. If you have to use fossil fuels to run your car, its honestly probably better to burn it as efficiently as possible in the cars where the least amount of energy will go to waste than to burn it at a power plant and then transfer it in steps that will inevitably have inefficiencies.
ships-cat
You actually saw him DO this Torqo ? You saw him attach a 9v battery, and the material heated to 'thousands' of degree's centigrade ?

Meow Purr.
Torgo
QUOTE (ships-cat @ Mar 30 2008, 01:35 PM) *
You actually saw him DO this Torqo ? You saw him attach a 9v battery, and the material heated to 'thousands' of degree's centigrade ?

Meow Purr.

Yeah its really cool - its these very thin chips of gray-yellow metal, he put it on a table and tapped the leads of the 9 volt battery to it from above and the chip flashed a bright yellow glow from heat and quickly faded through red to no more glow (large surface area and not much mass, cooled down very fast) and crumbled into powder. All the battery did was provide the activation energy to initiate the reaction that altered the structure of the alloy into the more stable form which is what released the heat. I assume it reached thousands of degrees from the color of the light.

Not the aforementioned hydrogen stuff but another example of how you can use a metal to densely store energy.
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